22133021 has 2 divisors, whose sum is σ = 22133022. Its totient is φ = 22133020.

The previous prime is 22133017. The next prime is 22133077. The reversal of 22133021 is 12033122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20340100 + 1792921 = 4510^2 + 1339^2 .

It is a cyclic number.

It is not a de Polignac number, because 22133021 - 2² = 22133017 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22132987 and 22133005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22133621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11066510 + 11066511.

It is an arithmetic number, because the mean of its divisors is an integer number (11066511).

Almost surely, 2^22133021 is an apocalyptic number.

It is an amenable number.

22133021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22133021 is an equidigital number, since it uses as much as digits as its factorization.

22133021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 22133021 is about 4704.5744759755. The cubic root of 22133021 is about 280.7675411882.

Adding to 22133021 its reverse (12033122), we get a palindrome (34166143).

The spelling of 22133021 in words is "twenty-two million, one hundred thirty-three thousand, twenty-one".